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A constant 3.90 Amp current moves along a straight wire that is perpendicular to a 2.40 T magnetic field. If the wire is 0.40 meter long, determine how much magnetic force will it experience? N
Suppose there are two transformers between your house and the high-voltage transmission line that distributes the power. In addition, assume that your house is the only one using electric power. At a substation the primary coil of a step-down tran..
An 800-N billboard worker stands on a 4.0-m scaffold supported byvertical ropes at each end. what is the tension in the ropenearest the worker
A system consisting entirely of electrons and protons has a net charge of 1.71×10?15 C and a net mass of 4.76×10?23 kg. how many protons are in this system
a radio can tune over the frequency range of a portion of mw broadcast band 800 khz to 1200 khz. if its lc circuit has
a soccer player kicks a rock horizontally off a 38.0-m-high cliff into a pool of water. if the player hears the sound
A rectangular block of ice 12 m on each side and 1.2m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917kg/m3.
two speakers that are in phase with each other are separated by a distance of 4.3 m and met a sound of frequency 221hz.
a ring has a radius r and charge q. the ring is shrunk to a new radius 12 r with no change in its charge. by what
A proton enters the region between the two plates shown in the figure moving in the x-direction with a speed v = 1.61 106 m/s. The potential of the top plate is Vt = 245 V, and the potential of the bottom plate is Vb = 0 V.
A certain laser emits light in a narrow band of wavelengths centered at 632.7 nm and with a ''wavelength width'', What is the corresponding ''frequency width'' in hertz for the emission
A pot containing 1.03 liters of water, initially at 19*C, How much heat must be supplied to bring it to a boil
A spacecraft is observed to be at a location m relative to an origin located on a nearby asteroid, find the unit vector in the direction of the average velocity
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